Image Item No. Description  61649  Duplo Door / Window Frame 2 x 4 x 3 Flat Front Surface, Completely Open Back Catalog: Parts: DUPLO, Building  92094  Duplo Door / Window Frame 2 x 4 x 5 Catalog: Parts: DUPLO, Building  65111  Duplo Door / Window Pane 1 x 4 x 4 with 2 Panes Catalog: Parts: DUPLO, Building